How to relax and most importantly stop thinking about the things i could be doing?

This probably seems really stupid but I'm not sure what to do at this point. The entirety of my summer break has been spent working on personal projects, I was supposed to have a great time but instead I burned myself out on art, programming and more to the point I kinda dread those things I liked before. Now, I'm not a complete idiot, so I saw that I needed to cool it a bit with everything going on, and focus on myself for a little while.
It didn't work though, because all the time I spent dedicated to myself instead of my personal projects was actually spent trying to relax while thinking of all the things I could be doing for instead, so I still feel tense after my supposed breaks.

I hope this doesn't come across as pathetic...